230257778 has 4 divisors (see below), whose sum is σ = 345386670. Its totient is φ = 115128888.

The previous prime is 230257723. The next prime is 230257793. The reversal of 230257778 is 877752032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 228221449 + 2036329 = 15107^2 + 1427^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57564443 + ... + 57564446.

Almost surely, 2^230257778 is an apocalyptic number.

230257778 is a deficient number, since it is larger than the sum of its proper divisors (115128892).

230257778 is a wasteful number, since it uses less digits than its factorization.

230257778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115128891.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 230257778 is about 15174.2471971429. The cubic root of 230257778 is about 612.9213786777.

It can be divided in two parts, 23025 and 7778, that added together give a palindrome (30803).

The spelling of 230257778 in words is "two hundred thirty million, two hundred fifty-seven thousand, seven hundred seventy-eight".